diff options
Diffstat (limited to 'media/ffvpx/libavcodec/mpegaudiodata.c')
| -rw-r--r-- | media/ffvpx/libavcodec/mpegaudiodata.c | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/media/ffvpx/libavcodec/mpegaudiodata.c b/media/ffvpx/libavcodec/mpegaudiodata.c new file mode 100644 index 0000000000..0569281109 --- /dev/null +++ b/media/ffvpx/libavcodec/mpegaudiodata.c @@ -0,0 +1,146 @@ +/* + * MPEG Audio common tables + * copyright (c) 2002 Fabrice Bellard + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * mpeg audio layer common tables. + */ + +#include "mpegaudiodata.h" + + +const uint16_t avpriv_mpa_bitrate_tab[2][3][15] = { + { {0, 32, 64, 96, 128, 160, 192, 224, 256, 288, 320, 352, 384, 416, 448 }, + {0, 32, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384 }, + {0, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320 } }, + { {0, 32, 48, 56, 64, 80, 96, 112, 128, 144, 160, 176, 192, 224, 256}, + {0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160}, + {0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160} + } +}; + +const uint16_t avpriv_mpa_freq_tab[3] = { 44100, 48000, 32000 }; + +/*******************************************************/ +/* layer 2 tables */ + +const int ff_mpa_sblimit_table[5] = { 27 , 30 , 8, 12 , 30 }; + +const int ff_mpa_quant_steps[17] = { + 3, 5, 7, 9, 15, + 31, 63, 127, 255, 511, + 1023, 2047, 4095, 8191, 16383, + 32767, 65535 +}; + +/* we use a negative value if grouped */ +const int ff_mpa_quant_bits[17] = { + -5, -7, 3, -10, 4, + 5, 6, 7, 8, 9, + 10, 11, 12, 13, 14, + 15, 16 +}; + +/* encoding tables which give the quantization index. Note how it is + possible to store them efficiently ! */ +static const unsigned char alloc_table_1[] = { + 4, 0, 2, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, + 4, 0, 2, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, + 4, 0, 2, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, + 4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16, + 4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16, + 4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16, + 4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16, + 4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16, + 4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16, + 4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16, + 4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16, + 3, 0, 1, 2, 3, 4, 5, 16, + 3, 0, 1, 2, 3, 4, 5, 16, + 3, 0, 1, 2, 3, 4, 5, 16, + 3, 0, 1, 2, 3, 4, 5, 16, + 3, 0, 1, 2, 3, 4, 5, 16, + 3, 0, 1, 2, 3, 4, 5, 16, + 3, 0, 1, 2, 3, 4, 5, 16, + 3, 0, 1, 2, 3, 4, 5, 16, + 3, 0, 1, 2, 3, 4, 5, 16, + 3, 0, 1, 2, 3, 4, 5, 16, + 3, 0, 1, 2, 3, 4, 5, 16, + 3, 0, 1, 2, 3, 4, 5, 16, + 2, 0, 1, 16, + 2, 0, 1, 16, + 2, 0, 1, 16, + 2, 0, 1, 16, + 2, 0, 1, 16, + 2, 0, 1, 16, + 2, 0, 1, 16, +}; + +static const unsigned char alloc_table_3[] = { + 4, 0, 1, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, + 4, 0, 1, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, + 3, 0, 1, 3, 4, 5, 6, 7, + 3, 0, 1, 3, 4, 5, 6, 7, + 3, 0, 1, 3, 4, 5, 6, 7, + 3, 0, 1, 3, 4, 5, 6, 7, + 3, 0, 1, 3, 4, 5, 6, 7, + 3, 0, 1, 3, 4, 5, 6, 7, + 3, 0, 1, 3, 4, 5, 6, 7, + 3, 0, 1, 3, 4, 5, 6, 7, + 3, 0, 1, 3, 4, 5, 6, 7, + 3, 0, 1, 3, 4, 5, 6, 7, +}; + +static const unsigned char alloc_table_4[] = { + 4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, + 4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, + 4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, + 4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, + 3, 0, 1, 3, 4, 5, 6, 7, + 3, 0, 1, 3, 4, 5, 6, 7, + 3, 0, 1, 3, 4, 5, 6, 7, + 3, 0, 1, 3, 4, 5, 6, 7, + 3, 0, 1, 3, 4, 5, 6, 7, + 3, 0, 1, 3, 4, 5, 6, 7, + 3, 0, 1, 3, 4, 5, 6, 7, + 2, 0, 1, 3, + 2, 0, 1, 3, + 2, 0, 1, 3, + 2, 0, 1, 3, + 2, 0, 1, 3, + 2, 0, 1, 3, + 2, 0, 1, 3, + 2, 0, 1, 3, + 2, 0, 1, 3, + 2, 0, 1, 3, + 2, 0, 1, 3, + 2, 0, 1, 3, + 2, 0, 1, 3, + 2, 0, 1, 3, + 2, 0, 1, 3, + 2, 0, 1, 3, + 2, 0, 1, 3, + 2, 0, 1, 3, + 2, 0, 1, 3, +}; + +const unsigned char * const ff_mpa_alloc_tables[5] = +{ alloc_table_1, alloc_table_1, alloc_table_3, alloc_table_3, alloc_table_4, }; |